Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/153500
Title: One reagent with two functions : simultaneous living radical polymerization and chain-end substitution for tailoring polymer dispersity
Authors: Wang, Chen-Gang
Chong, Amerlyn Ming Liing
Goto, Atsushi 
Keywords: Science::Chemistry::Organic chemistry::Polymers
Issue Date: 2021
Source: Wang, C., Chong, A. M. L. & Goto, A. (2021). One reagent with two functions : simultaneous living radical polymerization and chain-end substitution for tailoring polymer dispersity. ACS Macro Letters, 10(5), 584-590. https://dx.doi.org/10.1021/acsmacrolett.1c00179
Project: NRF-NRFI05-2019-0001
Journal: ACS Macro Letters
Abstract: Molecular weight distribution of polymer, termed dispersity (Đ), is a fundamental parameter that determines polymer properties. Sodium azide (NaN3) functions as a catalyst in organocatalyzed living radical polymerization when the reaction medium is non-polar. In contrast, NaN3 can act as a nucleophile when the reaction medium is polar. In this paper, we report an efficient approach to dispersity control by exploiting the dual functions of NaN3 under the varied solvent polarity. Simultaneous polymerization and chain-end substitution allowed us to tune the Đ values of various polymethacrylates and poly(butyl acrylate). Notably, the Đ value could be tuned to a wide range approximately from 1.2 to 2.0 for polymethacrylates and to 3.8 for poly(butyl acrylate). This approach afforded polymer brushes on surfaces with tailored Đ values. An interesting finding was that the polymer brushes exhibited a unique interaction with external molecules, depending on the Đ value.
URI: https://hdl.handle.net/10356/153500
ISSN: 2161-1653
DOI: 10.1021/acsmacrolett.1c00179
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Macro Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsmacrolett.1c00179.
Fulltext Permission: embargo_20220525
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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  Until 2022-05-25
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